Nuisance Algae? Eat it away!! Use Blue Legs to eat that nasty Cyano Bacteria (Red Slime Algae) & Macro Algae to eliminate the nitrates that grow the nuisance algae! This 50 pack of Blue Leg Hermit Crabs - Ships FREE and is only $27.99 You can add like items to the box for no additional shipping cost!! All FREE SHIPPING Refugium Packs are on Sale!!!!